Gold(I) complexes of bisphosphines with bis(azol-1-yl)methane backbone: structure of a rare dinuclear gold(I) complex [(Au2Cl){CH2(1,2-C3H2N2PPh2)2}3Cl]

摘要: Gold(I) complexes of bisphosphines assembled on the bis(azol-1-yl)methane platform viz.: bis(2-diphenylphosphinoimidazol-1-yl)methane (1), bis(5-diphenylphosphinopyrazol-1-yl)methane (2), bis(5-diphenylphosphino-1,2,4-triazol-1-yl)methane (3) have been described. Reactions two equivalents 1–3 with Au(SMe2)Cl produced dinuclear [(AuCl)2(μ-P^P)] (4–6) Au⋯Au distances around 3.13 A. Similar reactions 1 and 3 in 1 : 1 molar ratios yielded chelate 7 9, whereas ligand 2 formed a rare tetracoordinated digold(I) complex [(Au2Cl){CH2(1,2-C3H2N2PPh2)2}3Cl] (8) along both binuclear complexes. The 8 was also prepared good yield 1.5 : 1 reaction. structures 4, 5 confirmed by single crystal analysis.